Tsukino Hououin

Oregano is introduced as a "Medical Specialist Angeloid" and is one of the many Angeloids often shown cleaning up a small residence on Synapse. When Sugata was returning from a dive game, Oregano somehow manages to follow him back to Earth. Sugata then brought her to Tomokiand asked him to take care of her. But when Tomoki refused on the grounds that he was in financial difficulties, Mikako decides to take her in. Due to her striking resemblance to Ikaros, Tomoki sometimes refers to her as "Miniros."

Personality
- According to Nymph, Oregano has little to no speech or emotional capabilities.

- However, Mikako installed speech functions in her after she moved in, claiming it was "too sad to not be able to speak"

- Oregano has then gained a split personality, shy and quiet when Tomoki is around and passing mean remarks while he isn't. As shown when she calls Nymph a midget and during their fight she calls her "seaweed."

- There is one theory on how and why Oregano gained a split personality though yet unconfirmed it could have been because of Satsukitane Mikako who installed it together with the speech functions, her split personality where she is aggressive towards Nymph is kind of like Satsukitane Mikako's when some other girl tries to go out with Eishiro Sugata this could be seen when Tomoki's mother Tomoyo asks Eishiro to become her husband and also she has the same battle charateristics with Satsukitane Mikako using deadly firearms as her weapon of choice and ridicules her oppenent with their weaknesses this could be seen when Oregan battles Nymph in the "Angeloid World Martial Arts Competition" when she insults Nymph and defeats her using various firearms.